dhcpcd-discuss

Hi,

 

I am using dhcpcd 8.1.9 on Gentoo to manage the WAN interface on my router, as well as to delegate the IPv6 prefixes assigned by DHCPv6 to my internal interfaces (which have statically configured ipv4 addresses using gentoo’s net-scripts).

 

I technically only have two physical interfaces, wan0 and lan0, but lan0 is configured with multiple VLANs.  Occasionally, usually do to switch software updates, but sometimes due to other causes, the lan0 physical interfaces loses link for a few minutes.  After the link is re-established, the static IPv4 addresses are present, but the delegated ipv6 addresses are missing.  A side effect here is in this state, if I restart dhcpcd or restart the entire system, the DHCP lease seems to be stuck requesting a /64 instead of the previous /56, until I clear out the wan0.lease6 file and restart dhcpcd.

 

I would like to retain the separation between using dhcpcd for my wan (and prefix delegation), while retaining the distribution-specific config for the internal static/vlan addresses.  Is it possible to configure dhcpcd to re-establish the PD addresses on the internal interfaces when they come back up, without using dhcpcd to configure their IPv4 addresses?

 

If the only way to fix this is to use dhcpcd fully administer the lan0* interfaces, is there a way to manage them separately at runtime?  For example, currently I can restart dhcpcd to force a renewal of my wan0 interface, but that only effects the ipv6 delegated addresses on the internal addresses, which become invalid if the prefix is released, so that is correct behavior.  I do not want to lose LAN connectivity when I simply need to restart the WAN interface.

 

I have included my config file below in case I have any errors in it or old config options that should be changed in the current version.

 

Thanks.

 

$ cat /etc/dhcpcd.conf | grep -v "^#"

debug

logfile /var/log/dhcpcd.log

 

hostname

 

duid

 

waitip 6

noipv6rs

nodhcp

nodhcp6

noipv4ll

 

option rapid_commit

 

option domain_name_servers, domain_name, domain_search, host_name

option classless_static_routes

option interface_mtu

 

require dhcp_server_identifier

 

slaac private

 

nohook lookup-hostname

nohook resolv.conf

 

interface wan0

dhcp

dhcp6

ipv4ll

ia_pd wan0/::/56 lan0/0/64 lan0.42/2/64 lan0.43/3/64 lan0.110/4/64 lan0.214/5/64 lan0.215/6/64