Stefano Brivio
94c7c1dbcf
slirp4netns.sh: Fix up usage, exit 0 on --help
...
Based on an original patch by Giuseppe Scrivano: there's no need
to pass $0 to usage, drop that everywhere, and make it consistent.
Don't exit with error on -h, --help.
Suggested-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-10-21 20:37:51 +02:00
Stefano Brivio
2e6e29a757
slirp4netns.sh: Introduce compatibility wrapper behaving like slirp4netns(1)
...
Warning: draft quality, not really tested, --enable-sandbox not
supported yet.
Example:
$ unshare -rUn
# echo $$
3130879
$ ./slirp4netns.sh -m 65520 -c 3130879 tap0
sent tapfd=5 for tap0
received tapfd=5
Starting slirp
* MTU: 65520
* Network: 10.0.2.0
* Netmask: 255.255.255.0
* Gateway: 10.0.2.2
* DNS: 10.0.2.3
* Recommended IP: 10.0.2.100
WARNING: 127.0.0.1:* on the host is accessible as 10.0.2.2 (set --disable-host-loopback to prohibit connecting to 127.0.0.1:*)
# ip li sh
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
33: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65520 qdisc pfifo_fast state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 5e:9d:a0:c5:cf:67 brd ff:ff:ff:ff:ff:ff
# ip ad sh
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
33: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65520 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 5e:9d:a0:c5:cf:67 brd ff:ff:ff:ff:ff:ff
inet 10.0.2.0/24 scope global tap0
valid_lft forever preferred_lft forever
inet6 fe80::5c9d:a0ff:fec5:cf67/64 scope link
valid_lft forever preferred_lft forever
# ip ro sh
default via 10.0.2.2 dev tap0
10.0.2.0/24 dev tap0 proto kernel scope link src 10.0.2.0
root@epycfail:~# ip -6 ro sh
fe80::/64 dev tap0 proto kernel metric 256 pref medium
# iperf3 -c 10.0.2.2 -l1M
Connecting to host 10.0.2.2, port 5201
[ 5] local 10.0.2.0 port 43014 connected to 10.0.2.2 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 1.38 GBytes 11.8 Gbits/sec 0 9.96 MBytes
[ 5] 1.00-2.00 sec 1.59 GBytes 13.6 Gbits/sec 0 13.3 MBytes
[ 5] 2.00-3.00 sec 1.63 GBytes 14.0 Gbits/sec 0 13.3 MBytes
[ 5] 3.00-4.00 sec 1.78 GBytes 15.3 Gbits/sec 0 13.3 MBytes
[ 5] 4.00-5.00 sec 1.80 GBytes 15.5 Gbits/sec 0 15.8 MBytes
[ 5] 5.00-6.00 sec 1.69 GBytes 14.5 Gbits/sec 0 15.8 MBytes
[ 5] 6.00-7.00 sec 1.65 GBytes 14.2 Gbits/sec 0 15.8 MBytes
[ 5] 7.00-8.00 sec 1.68 GBytes 14.4 Gbits/sec 0 15.8 MBytes
[ 5] 8.00-9.00 sec 1.60 GBytes 13.7 Gbits/sec 0 15.8 MBytes
[ 5] 9.00-10.00 sec 1.66 GBytes 14.3 Gbits/sec 0 15.8 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 16.5 GBytes 14.1 Gbits/sec 0 sender
[ 5] 0.00-10.01 sec 16.4 GBytes 14.1 Gbits/sec receiver
iperf Done.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-10-14 13:20:34 +02:00
