On 03/07/18 07:04, Chris Caudle wrote: > Could be the case that AUTOCONF and DHCPv6 are mutually exclusive now. > I have a CentOS 7.4 machine which seems to be running correctly with both > IPV6_AUTOCONF=yes and DHCPV6C=yes, but that distribution has dhclient > provided by dhclient-4.2.5-58.el7.centos.1 and Fedora 27 is using rhclient > from dhcp-client-4.3.6-9.fc27. Could be changed behavior between 4.2 and 4.3 > of dhclient. > > Against that hypothesis is that the dhclient did log that it was requesting > on the second interface, which has the same settings in the ifcfg file. I'll > try some different settings tonight. I'm pretty sure that the current > version of the file was hand edited, I have used nmcli and nmtui in the past. > I just edited the connection with nmtui and it did use only the autoconf > directive, not the dhcp, so I will see if that worked. It did not just from > restarting NetworkManager, I will have to try later bringing the interface > down all the way and restarting. I am connected over that network via ssh > currently so I can't easily shut it down. >
FWIW, I manually added DHCPV6C=yes to a config file on a VM. As I mentioned, my router can only support one address assignment method at a time and it is configured for "stateless". With that said, the only message that appears in the journal is... Mar 07 11:02:24 f27k.greshko.com NetworkManager: <info> [1520391744.1479] dhcp-init: Using DHCP client 'dhclient' There is no indication from the status of NetworkManager that /sbin/dhclient was ever started and it isn't running. So, if your router is configured for "stateful (dhcp)" it is possible it won't simultaneously support "stateless". Therefore I would try... IPV6_AUTOCONF=no DHCPV6C=yes -- If simple questions can be answered with a simple google query then why are there so many of them?
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