dhcpcd-discuss

On 07/12/2017 07:55, Neal P. Murphy wrote:
> Did I screw up the kernel config this time? I had to redo the config so the kernel would run on the Atom N270 I have; I may've botched something else in it.
>
> Built rc4 just like rc3, definitely using 3.4.x kernel headers. Built and installed the latest SWE3.1-SP4 build running Linux 3.16.51.

...

> Dec 07 01:52:35 [18035]: dhcpcd-7.0.0-rc4 starting
> Dec 07 01:52:35 [18035]: eth3: if_disable_autolinklocal: Operation not supported

If the headers match or are older than the kernel, I really don't 
understand why you see that error :/

> Dec 07 01:52:35 [18035]: dhcp6_listen: Address already in use
> Wait, what's that 'address already in use' doing there? Both rc3 and rc4 do that. 'ss -ln' yields:
> ----
> udp    UNCONN     0      0         fe80::290:bff:fe17:f27d%eth3:546    :::*
>
> Oho! "/usr/sbin/dhcpcd -4 ...." opens that socket. Replace that prog with rc3 and....

Nice find!
Fixed in b86b4ac47fa09edafa6ce3c009751557fe1a6138

> With the ipv4-only not opening ipv6, I get:
> ----
> dhcpcd-7.0.0-rc4 starting
> eth3: if_disable_autolinklocal: Operation not supported
> eth0: executing `/etc/rc.d/rc.update6red' PREINIT
> eth0: executing `/etc/rc.d/rc.update6red' CARRIER
> eth1: executing `/etc/rc.d/rc.update6red' PREINIT
> eth1: executing `/etc/rc.d/rc.update6red' NOCARRIER
> eth2: executing `/etc/rc.d/rc.update6red' PREINIT
> eth2: executing `/etc/rc.d/rc.update6red' CARRIER
> eth3: executing `/etc/rc.d/rc.update6red' PREINIT
> eth3: executing `/etc/rc.d/rc.update6red' CARRIER
> DUID 00:01:00:01:21:ba:a9:8c:00:90:0b:17:f2:7d
> eth0: IAID 0b:17:f2:7a
> eth2: IAID 0b:17:f2:7c
> eth3: IAID 0b:17:f2:7d
> eth3: IAID 4b:17:f2:7d
> eth3: IAID 00:00:00:01
> eth3: delaying IPv6 router solicitation for 1.0 seconds
> eth3: reading lease `/var/db/dhcpcd/eth3.lease6'
> eth3: soliciting a DHCPv6 lease
> eth3: delaying SOLICIT6 (xid 0x664120), next in 0.6 seconds
> eth1: waiting for carrier
> eth3: broadcasting SOLICIT6 (xid 0x664120), next in 1.1 seconds
> eth3: soliciting an IPv6 router
> eth3: sending Router Solicitation
> eth3: broadcasting SOLICIT6 (xid 0x664120), next in 2.2 seconds
> eth3: Router Advertisement from fe80::201:5cff:fe8e:ea46
> eth3: adding default route via fe80::201:5cff:fe8e:ea46
> eth3: executing `/etc/rc.d/rc.update6red' ROUTERADVERT
> eth3: broadcasting SOLICIT6 (xid 0x664120), next in 4.4 seconds
> eth3: ADV 2001:558:6036:65:8d7e:3f36:aa01:26cc/128 from fe80::201:5cff:fe8e:ea46
> eth3: broadcasting REQUEST6 (xid 0x2545a1), next in 1.1 seconds
> eth3: accepted reconfigure key
> eth3: REPLY6 received from fe80::201:5cff:fe8e:ea46
> eth3: adding address 2001:558:6036:65:8d7e:3f36:aa01:26cc/128
> eth3: pltime 3600 seconds, vltime 3600 seconds
> eth3: renew in 1800, rebind in 2880, expire in 3600 seconds
> lo: adding reject route to 2601:5ca:4400:960::/60
> eth3: writing lease `/var/db/dhcpcd/eth3.lease6'
> eth3: delegated prefix 2601:5ca:4400:960::/60
> eth0: adding address 2601:5ca:4400:962::1/64
> eth0: pltime 3600 seconds, vltime 3600 seconds
> eth0: waiting for DHCPv6 DAD to complete
> eth2: adding address 2601:5ca:4400:964::1/64
> eth2: pltime 3600 seconds, vltime 3600 seconds
> eth2: waiting for DHCPv6 DAD to complete
> eth1: has no carrier, cannot delegate addresses
> eth0: adding route to 2601:5ca:4400:962::/64
> eth2: adding route to 2601:5ca:4400:964::/64
> eth3: waiting for DHCPv6 DAD to complete
> eth3: DHCPv6 DAD completed
> eth3: executing `/etc/rc.d/rc.update6red' BOUND6
> ..DHCP6 lease bound (BOUND6) and prefix delegated; update RED6 info
> forking to background
> forked to background, child pid 21990
> ----
> Looks better.
>
> When I stopped it, dhcpcd left the /64 on eth3 but removed the /128 and removed the /64s on eth0 and eth2. It also left these routes behind:
> ----
> 2001:558:6036:65:8d7e:3f36:aa01:26cc dev eth3  proto kernel  metric 256  expires 3347sec
> 2601:5ca:4400:960::/64 dev eth3  proto kernel  metric 256
> unreachable 2601:5ca:4400:960::/60 dev lo  proto dhcp  metric 201  error -101
> ----

I still can't replicate that.
Could you clear the addresses and routing (or just reboot the box) and 
retest please?
Ideally with the latest git head with the fixes in.
If it fails, the same dhcpcd log as the what you have here is also neeed!

Thanks

Roy