On 03/07/18 11:16, Ed Greshko wrote: > 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 >
Oh, for completeness I went back to my VM and configured my interface with IPV6_AUTOCONF=no DHCPV6C=yes And this is running.... /sbin/dhclient -d -q -6 But I have no global IPv6 address since there is no dhcpv6 server available. -- If simple questions can be answered with a simple google query then why are there so many of them?
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