com.docker.slirp: return DNS responses in order
com.docker.slirp: return DNS responses in order

Before this patch the Linux resolver seemed to get confused with
sequences like:

1. lookup A
2. lookup AAAA
3. response AAAA
4. response A
^ at this point it would generate a destination port unreachable
  ICMP

Tentatively fixes #1382

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@docker.com>

djs55/vpnkit,djs55/vpnkit,samoht/vpnkit,djs55/vpnkit