mirrors/passt
1
0
Fork 0
mirror of https://passt.top/passt synced 2025-05-30 21:05:34 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

tests: Use socat instead of netcat

Browse source 
Commit 41c02e10 ("tests: Use nmap-ncat instead of openbsd netcat for pasta
tests") updated the pasta tests to use the nmap version of ncat instead of
the openbsd version, for greater portability.

For some upcoming changes, however, we'll be wanting to use socat.
"socat" can do everything "ncat" can and more, so let's move all the
tests using host tools (either directly on the host or via mbuto
generated images) to using socat instead.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: Fix a typo in port specification, 31337 instead of x31337]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2022-07-15 15:21:34 +10:00 • committed by Stefano Brivio
parent 05dc1c65c1
commit 1aaa2bd189
11 changed files with 200 additions and 200 deletions

22
test/udp/passt
View file

@ -11,15 +11,15 @@
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
gtools nc tee grep cat ip jq md5sum cut
htools printf dd nc tee grep cat ip jq md5sum cut
gtools socat tee grep cat ip jq md5sum cut
htools printf dd socat tee grep cat ip jq md5sum cut
test UDP/IPv4: host to guest
temp TEMP
temp NC_PID
guestb (nc -u -q1 -4 -l 10001 & echo $! > __NC_PID__) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
temp SC_PID
guestb (socat -u UDP4-LISTEN:10001 STDOUT & echo $! > __SC_PID__) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
host dd if=/dev/urandom bs=1k count=5 > __TEMP__ && printf "\nEND_OF_TEST\n" >> __TEMP__
host cat __TEMP__ | nc -u -q1 -N 127.0.0.1 10001
host socat -u OPEN:__TEMP__ UDP4:127.0.0.1:10001
guestw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
@ -27,27 +27,27 @@ check [ "__GUEST_MD5__" = "__HOST_MD5__" ]
test UDP/IPv4: guest to host
host :> __TEMP__
hostb (nc -u -q1 -4 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP4-LISTEN:10003,bind=127.0.0.1 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
gout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
guest cat test.bin | nc -u -q1 -N __GW__ 10003
guest socat -u OPEN:test.bin UDP4:__GW__:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__HOST_MD5__" ]
test UDP/IPv6: host to guest
guestb (nc -u -q1 -6 -l 10001 & echo $! > nc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pid))
guestb (socat -u UDP6-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
sleep 1
host cat __TEMP__ | nc -u -q1 -N ::1 10001
host socat -u OPEN:__TEMP__ UDP6:[::1]:10001
guestw
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__HOST_MD5__" ]
test UDP/IPv6: guest to host
host :> __TEMP__
hostb (nc -u -q1 -6 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP6-LISTEN:10003,bind=[::1] STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
gout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
gout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
guest cat test.bin | nc -u -q1 -N __GW6__%__IFNAME__ 10003
guest socat -u OPEN:test.bin UDP6:[__GW6__%__IFNAME__]:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__HOST_MD5__" ]

72
test/udp/passt_in_ns
View file

@ -11,16 +11,16 @@
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
gtools nc tee grep cat ip jq md5sum cut
nstools nc tee grep cat ip jq md5sum cut
htools printf dd nc tee grep cat ip jq md5sum cut
gtools socat tee grep cat ip jq md5sum cut
nstools socat tee grep cat ip jq md5sum cut
htools printf dd socat tee grep cat ip jq md5sum cut
test UDP/IPv4: host to guest
temp TEMP
temp NC_PID
guestb (nc -u -q1 -4 -l 10001 & echo $! > nc.pic) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pic))
temp SC_PID
guestb (socat -u UDP4-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
host dd if=/dev/urandom bs=1k count=5 > __TEMP__ && printf "\nEND_OF_TEST\n" >> __TEMP__
host cat __TEMP__ | nc -u -q1 -N 127.0.0.1 10001
host socat -u OPEN:__TEMP__ UDP4:127.0.0.1:10001
guestw
hout MD5 md5sum __TEMP__ | cut -d' ' -f1
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
@ -29,25 +29,25 @@ check [ "__GUEST_MD5__" = "__MD5__" ]
test UDP/IPv4: host to ns
temp TEMP_NS
ns :> __TEMP_NS__
nsb (nc -u -q1 -4 -l 10002 & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
host cat __TEMP__ | nc -u -q1 -N 127.0.0.1 10002
nsb (socat -u UDP4-LISTEN:10002 STDOUT & echo $! > __SC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
host socat -u OPEN:__TEMP__ UDP4:127.0.0.1:10002
nsw
nsout NS_MD5 md5sum __TEMP_NS__ | cut -d' ' -f1
check [ "__NS_MD5__" = "__MD5__" ]
test UDP/IPv4: guest to host
host :> __TEMP__
hostb (nc -u -q1 -4 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP4-LISTEN:10003 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
gout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
guest cat test.bin | nc -u -q1 -N __GW__ 10003
guest socat -u OPEN:test.bin UDP4:__GW__:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv4: guest to ns
ns :> __TEMP_NS__
nsb (nc -u -q1 -4 -l 10002 & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
guest cat test.bin | nc -u -q1 -N __GW__ 10002
nsb (socat -u UDP4-LISTEN:10002 STDOUT & echo $! > __SC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
guest socat -u OPEN:test.bin UDP4:__GW__:10002
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
@ -55,97 +55,97 @@ check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv4: ns to host (recvmmsg/sendmmsg)
sleep 1
host :> __TEMP__
hostb (nc -u -q1 -4 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
ns cat __TEMP_NS__ | nc -u -q1 -N 127.0.0.1 10003
hostb (socat -u UDP4-LISTEN:10003 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
ns socat -u OPEN:__TEMP_NS__ UDP4:127.0.0.1:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv4: ns to host (via tap)
host :> __TEMP__
hostb (nc -u -q1 -4 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
ns cat __TEMP_NS__ | nc -u -q1 -N __GW__ 10003
hostb (socat -u UDP4-LISTEN:10003 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
ns socat -u OPEN:__TEMP_NS__ UDP4:__GW__:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv4: ns to guest (using loopback address)
guestb (nc -u -q1 -4 -l 10001 & echo $! > nc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pid))
ns cat __TEMP_NS__ | nc -u -q1 -N 127.0.0.1 10001
guestb (socat -u UDP4-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
ns socat -u OPEN:__TEMP_NS__ UDP4:127.0.0.1:10001
guestw
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__MD5__" ]
test UDP/IPv4: ns to guest (using namespace address)
guestb (nc -u -q1 -4 -l 10001 & echo $! > nc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pid))
guestb (socat -u UDP4-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
nsout ADDR ip -j -4 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
ns cat __TEMP_NS__ | nc -u -q1 -N __ADDR__ 10001
ns socat -u OPEN:__TEMP_NS__ UDP4:__ADDR__:10001
guestw
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__MD5__" ]
test UDP/IPv6: host to guest
guestb (nc -u -q1 -6 -l 10001 & echo $! > nc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pid))
host cat __TEMP__ | nc -u -q1 -N ::1 10001
guestb (socat -u UDP6-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
host socat -u OPEN:__TEMP__ UDP6:[::1]:10001
guestw
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__MD5__" ]
test UDP/IPv6: host to ns
ns :> __TEMP_NS__
nsb (nc -u -q1 -6 -l 10002 & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
host cat __TEMP__ | nc -u -q1 -N ::1 10002
nsb (socat -u UDP6-LISTEN:10002 STDOUT & echo $! > __SC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
host socat -u OPEN:__TEMP__ UDP6:[::1]:10002
nsw
nsout NS_MD5 md5sum __TEMP_NS__ | cut -d' ' -f1
check [ "__NS_MD5__" = "__MD5__" ]
test UDP/IPv6: guest to host
host :> __TEMP__
hostb (nc -u -q1 -6 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP6-LISTEN:10003 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
gout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
gout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
guest cat test.bin | nc -u -q1 -N __GW6__%__IFNAME__ 10003
guest socat -u OPEN:test.bin UDP6:[__GW6__%__IFNAME__]:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv6: guest to ns
ns :> __TEMP_NS__
nsb (nc -u -q1 -6 -l 10002 & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
guest cat test.bin | nc -u -q1 -N __GW6__%__IFNAME__ 10002
nsb (socat -u UDP6-LISTEN:10002 STDOUT & echo $! > __SC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
guest socat -u OPEN:test.bin UDP6:[__GW6__%__IFNAME__]:10002
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv6: ns to host (recvmmsg/sendmmsg)
host :> __TEMP__
hostb (nc -u -q1 -6 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
ns cat __TEMP_NS__ | nc -u -q1 -N ::1 10003
hostb (socat -u UDP6-LISTEN:10003 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
ns socat -u OPEN:__TEMP_NS__ UDP6:[::1]:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv6: ns to host (via tap)
host :> __TEMP__
hostb (nc -u -q1 -6 -l 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP6-LISTEN:10003 STDOUT & echo $! > __SC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
ns cat __TEMP_NS__ | nc -u -q1 -N __GW6__%__IFNAME__ 10003
ns socat -u OPEN:__TEMP_NS__ UDP6:[__GW6__%__IFNAME__]:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv6: ns to guest (using loopback address)
guestb (nc -u -q1 -6 -l 10001 & echo $! > nc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pid))
ns cat __TEMP_NS__ | nc -u -q1 -N ::1 10001
guestb (socat -u UDP6-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
ns socat -u OPEN:__TEMP_NS__ UDP6:[::1]:10001
guestw
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__MD5__" ]
test UDP/IPv6: ns to guest (using namespace address)
guestb (nc -u -q1 -6 -l 10001 & echo $! > nc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat nc.pid))
guestb (socat -u UDP6-LISTEN:10001 STDOUT & echo $! > sc.pid) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat sc.pid))
nsout ADDR6 ip -j -6 addr show|jq -rM '.[] | select(.ifname == "__IFNAME__").addr_info[0].local'
ns cat __TEMP_NS__ | nc -u -q1 -N __ADDR6__ 10001
ns socat -u OPEN:__TEMP_NS__ UDP6:[__ADDR6__]:10001
guestw
gout GUEST_MD5 md5sum test.bin | cut -d' ' -f1
check [ "__GUEST_MD5__" = "__MD5__" ]

28
test/udp/pasta
View file

@ -11,18 +11,18 @@
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
nstools ncat tee grep cat ip jq md5sum cut
htools printf dd ncat tee grep cat ip jq md5sum cut
nstools socat tee grep cat ip jq md5sum cut
htools printf dd socat tee grep cat ip jq md5sum cut
test UDP/IPv4: host to ns
temp TEMP
temp TEMP_NS
temp NC_PID
ns :> __TEMP_NS__
nsb (ncat -u -4 -l 127.0.0.1 10002 & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
nsb (socat -u UDP4-LISTEN:10002,bind=127.0.0.1 STDOUT & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
host dd if=/dev/urandom bs=1k count=5 > __TEMP__ && printf "\nEND_OF_TEST\n" >> __TEMP__
host cat __TEMP__ | ncat -u 127.0.0.1 10002
host socat OPEN:__TEMP__ UDP4:127.0.0.1:10002
nsw
hout MD5 md5sum __TEMP__ | cut -d' ' -f1
nsout NS_MD5 md5sum __TEMP_NS__ | cut -d' ' -f1
@ -30,26 +30,26 @@ check [ "__NS_MD5__" = "__MD5__" ]
test UDP/IPv4: ns to host (recvmmsg/sendmmsg)
host :> __TEMP__
hostb (ncat -u -4 -l 127.0.0.1 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP4-LISTEN:10003,bind=127.0.0.1 STDOUT & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
sleep 1
ns cat __TEMP_NS__ | ncat -u 127.0.0.1 10003
ns socat OPEN:__TEMP_NS__ UDP4:127.0.0.1:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv4: ns to host (via tap)
host :> __TEMP__
hostb (ncat -u -4 -l 0.0.0.0 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP4-LISTEN:10003 STDOUT & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
nsout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway'
ns cat __TEMP_NS__ | ncat -u __GW__ 10003
ns socat -u OPEN:__TEMP_NS__ UDP4:__GW__:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
test UDP/IPv6: host to ns
ns :> __TEMP_NS__
nsb (ncat -u -6 -l ::1 10002 & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
host cat __TEMP__ | ncat -u ::1 10002
nsb (socat -u UDP6-LISTEN:10002,bind=[::1] STDOUT & echo $! > __NC_PID__) | tee __TEMP_NS__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
host socat -u OPEN:__TEMP__ UDP6:[::1]:10002
nsw
hout MD5 md5sum __TEMP__ | cut -d' ' -f1
nsout NS_MD5 md5sum __TEMP_NS__ | cut -d' ' -f1
@ -57,9 +57,9 @@ check [ "__NS_MD5__" = "__MD5__" ]
test UDP/IPv6: ns to host (recvmmsg/sendmmsg)
host :> __TEMP__
hostb (ncat -u -6 -l ::1 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP6-LISTEN:10003,bind=[::1] STDOUT & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
sleep 1
ns cat __TEMP_NS__ | ncat -u ::1 10003
ns socat -u OPEN:__TEMP_NS__ UDP6:[::1]:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]
@ -67,10 +67,10 @@ nsw
test UDP/IPv6: ns to host (via tap)
host :> __TEMP__
hostb (ncat -u -6 -l :: 10003 & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
hostb (socat -u UDP6-LISTEN:10003 STDOUT & echo $! > __NC_PID__) | tee __TEMP__ | (grep -qm1 "END_OF_TEST" && kill $(cat __NC_PID__))
nsout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway'
nsout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname'
ns cat __TEMP_NS__ | ncat -u __GW6__%__IFNAME__ 10003
ns socat -u OPEN:__TEMP_NS__ UDP6:[__GW6__%__IFNAME__]:10003
hostw
hout HOST_MD5 md5sum __TEMP__ | cut -d' ' -f1
check [ "__HOST_MD5__" = "__MD5__" ]