dhcpcd-discuss

Hello,

This is the issue that happens:

 1. When the system comes up, no network cable is plugged in.
    - At this point dhcpcd is launched for eth0.
 2. Plug in network cable 8-10 seconds after system is up.
    - dhcpcd seems like it is still running, seems to acquire an IP and
      then times out.
      + We have a network monitor that detects kernel netlink up/down
        messages. Thus, when link comes up, we try and launch dhcpcd but
        it reports it is already running, so we let it be.
 3. Thus, no IP address is obtained at all.

Note: All configurations are default.

Syslog from dhcpcd 6.0.5
========================
Sep 12 11:23:52 falcon-UNKNOWN dhcpcd[618]: version 6.0.5 starting
Sep 12 11:23:53 falcon-UNKNOWN dhcpcd[618]: eth0: waiting for carrier
Sep 12 11:24:23 falcon-UNKNOWN dhcpcd[618]: timed out
Sep 12 11:24:23 falcon-UNKNOWN dhcpcd[618]: allowing 8 seconds for IPv4LL timeout
Sep 12 11:24:29 falcon-UNKNOWN dhcpcd[618]: eth0: carrier acquired
# This is when our simple network monitor tries to launch dhcpcd with
# 'dhcpcd eth0'
Sep 12 11:24:29 falcon-UNKNOWN dhcpcd[1421]: dhcpcd already running on pid 618 (/var/run/dhcpcd-eth0.pid)
Sep 12 11:24:29 falcon-UNKNOWN dhcpcd[618]: eth0: soliciting an IPv6 router
Sep 12 11:24:29 falcon-UNKNOWN dhcpcd[618]: error writing DUID: /etc/dhcpcd.duid: Read-only file system
Sep 12 11:24:29 falcon-UNKNOWN dhcpcd[618]: eth0: rebinding lease of 192.168.1.178
Sep 12 11:24:31 falcon-UNKNOWN dhcpcd[618]: timed out
Sep 12 11:24:31 falcon-UNKNOWN dhcpcd[618]: exited

Syslog for dhcpcd 6.4.3
=======================
Sep 12 11:47:08 falcon-UNKNOWN dhcpcd[650]: version 6.4.3 starting
Sep 12 11:47:08 falcon-UNKNOWN dhcpcd[650]: eth0: adding address fe80::ba2a:8253:babc:7a54
Sep 12 11:47:08 falcon-UNKNOWN dhcpcd[650]: eth0: waiting for carrier
Sep 12 11:47:37 falcon-UNKNOWN dhcpcd[650]: eth0: carrier acquired
# This is when our simple network monitor tries to launch dhcpcd with
# 'dhcpcd eth0'
Sep 12 11:47:37 falcon-UNKNOWN dhcpcd[1409]: dhcpcd already running on pid 650 (/var/run/dhcpcd-eth0.pid)
Sep 12 11:47:37 falcon-UNKNOWN dhcpcd[650]: error writing DUID: /etc/dhcpcd.duid: Read-only file system
Sep 12 11:47:37 falcon-UNKNOWN dhcpcd[650]: DUID 00:03:00:01:00:1f:f2:08:a7:b0
Sep 12 11:47:37 falcon-UNKNOWN dhcpcd[650]: eth0: IAID f2:08:a7:b0
Sep 12 11:47:38 falcon-UNKNOWN dhcpcd[650]: eth0: soliciting a DHCP lease
Sep 12 11:47:38 falcon-UNKNOWN dhcpcd[650]: timed out
Sep 12 11:47:38 falcon-UNKNOWN dhcpcd[650]: allowing 8 seconds for IPv4LL timeout
Sep 12 11:47:38 falcon-UNKNOWN dhcpcd[650]: eth0: soliciting an IPv6 router
Sep 12 11:47:42 falcon-UNKNOWN dhcpcd[650]: eth0: offered 192.168.1.164 from 192.168.1.83
Sep 12 11:47:46 falcon-UNKNOWN dhcpcd[650]: timed out
Sep 12 11:47:46 falcon-UNKNOWN dhcpcd[650]: exited

Thanks,
Amit