dhcpcd-discuss

On 25/03/2019 06:48, Remi Locherer wrote:
> > > The log also shows another issue:
> > > Renew does not work and dhcpcd needs to do a rebind. This is because the
> > > DHCPv6 server from my ISP does not answer renew requests sent using unicast.
> > > --> https://www.as13030.net/status.php#collapse_12863 : issues with PD

> Mar 25 06:57:12 blau dhcpcd[88652]: em2: unicasting RENEW6 (xid 0x38fce6), next in 10.3 seconds
> Mar 25 06:57:22 blau dhcpcd[88652]: em2: unicasting RENEW6 (xid 0x38fce6), next in 20.2 seconds
> Mar 25 06:57:42 blau dhcpcd[88652]: em2: unicasting RENEW6 (xid 0x38fce6), next in 40.8 seconds
> Mar 25 06:58:23 blau dhcpcd[88652]: em2: unicasting RENEW6 (xid 0x38fce6), next in 77.6 seconds
> Mar 25 06:59:41 blau dhcpcd[88652]: em2: unicasting RENEW6 (xid 0x38fce6), next in 151.3 seconds
> Mar 25 07:02:12 blau dhcpcd[88652]: em2: unicasting RENEW6 (xid 0x38fce6), next in 309.1 seconds
> Mar 25 07:07:12 blau dhcpcd[88652]: em2: failed to renew DHCPv6, rebinding

I've added a commit to dhcpcd which makes this work:

interface em2
	nooption dhcp6_unicast

This should stop dhcpcd from unicasting the renew request and will 
broadcast it instead.

https://roy.marples.name/git/dhcpcd.git/commit/?id=01c95afadf6231ae7dced05537f95995f086f573

Let me know if this fixes your problem with renew.
Clearly, rebind is still an issue, but if renew works maybe that will go 
away.

Roy