dhcpcd-discuss

On Tue, Mar 26, 2019 at 08:27:03AM +0000, Roy Marples wrote:
> On 26/03/2019 06:16, Remi Locherer wrote:
> > On Tue, Mar 26, 2019 at 12:54:11AM +0000, Roy Marples wrote:
> > > 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.
> > 
> > With this renew works and all interfaces keep their IPv6 address. Thank you!
> 
> Awesome sauce!
> That is one badly broken DHCPv6 server :(
> 
> > Something with 'script ""' seems not to work as expected.
> > 
> > 
> > Mar 26 06:08:16 blau dhcpcd[9558]: dhcpcd-7.1.1 starting
> > Mar 26 06:08:16 blau dhcpcd[9558]: em1: executing `""' PREINIT
> > Mar 26 06:08:16 blau dhcpcd[9558]: script_runreason: "": WEXITSTATUS 127
> > Mar 26 06:08:16 blau dhcpcd[9558]: em1: executing `""' CARRIER
> > Mar 26 06:08:16 blau dhcpcd[9558]: script_runreason: "": WEXITSTATUS 127
> 
> Yes, I posted a fix for this the other day.
> Here it is again:
> https://roy.marples.name/git/dhcpcd.git/commit/?id=f17480d3e1e914d03fea0c054a028fe979742950
> https://roy.marples.name/git/dhcpcd.git/commit/?id=97bb60296dc42a29a054ebf9347ac31a7d787393

I did a git clone early this morning and thought I also got these fixes.
With 'script /dev/null' nothing gets logged.

> Hopefully dhcpcd is now working sweetly for you :)

Yes, it is. Thank you!

Remi