dhcpv6_opt() needs to subtract option length _before_ returning,
so that callers can conveniently pass the remaining length on
subsequent calls.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
The NotOnLink status code needs to be appended to the existing IA
content, because if we omit the requested addresses in the reply,
ISC's dhclient handles it as a NoAddrsAvail response.
Also fix length accounting (we would send a bunch of zeroes after
the IA otherwise), and print an informational message with the
requested address, if it's not appropriate for the link.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This implementation, similarly to the IPv4 DHCP one, hands out a
single address, which is the same as the upstream address for the
host.
This avoids the need for address translation as long as the client
runs a DHCPv6 client. The NDP "Managed" flag is now set in Router
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Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
