vnet+jails+dhclient fail

[chk.jxcn]

Hi all,

I set up a jails with vnet enable, and pass one port of a PCI-E 4 port NIC to this jails.
Also I add ruleset to unhide bpf.

Then I enable DHCP on jails
ifconfig_igb2="DHCP"

But after start jails, I found no ip address was assigned to this interface, but both `dhclient igb2` or `service dhclient start igb2` works.
After read network.subr, I think enable synchronous_dhclient make it works, and it really works.
synchronous_dhclient="YES"

I just wonder why it didn't works if I copy same config from host, and which part of rc make this difference?

 

[patmaddox]

I don't have an answer for why synchronous is needed, but your post helped me get DHCP working with a jail inside of bhyve. ifconfig_DEFAULT="SYNCDHCP" did the trick.