On 27.01.21 10:08, Peng Fan wrote: > Hi Jan, > > When booting inmate Linux, I have ivshmem-net configured. In root cell it > shows as eth2. > > I monitor system network, and see eth2 is assigned a random address. > > [ADDR]4: eth2 inet 169.254.232.89/16 brd 169.254.255.255 scope global eth2 > valid_lft forever preferred_lft forever > [ROUTE]local 169.254.232.89 dev eth2 table local proto kernel scope host src > 169.254.232.89 > [ROUTE]broadcast 169.254.255.255 dev eth2 table local proto kernel scope link > src 169.254.232.89 > [ROUTE]169.254.0.0/16 dev eth2 proto kernel scope link src 169.254.232.89 > [ROUTE]broadcast 169.254.0.0 dev eth2 table local proto kernel scope link src > 169.254.232.89 > [ROUTE]default dev eth2 scope link > > > And also in route table, it added two entries going through eth2, I not > understand why > it will add one entry that default use eth2 with gateway 0.0.0.0 > #route > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > default 0.0.0.0 0.0.0.0 U 0 0 0 eth2 > default _gateway 0.0.0.0 UG 0 0 0 eth1 > 10.193.102.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 > 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth2 > > It added the eth2 route table and will break nfsroot if we using 10.193.108.x > for nfsroot server, > because it will match the 1st entry. > > This is not jailhouse hypervisor issue, I just not sure the eth2 behavior, it > is systemd does that > route change or we need look into ivshmem-net to avoid update route table > when creating > eth2?
I would suspect that this is something specific to your network management system. Is it systemd-networkd? In any case, the only things that should be more special about ivshmem-net is that it comes up with random MAC addresses (which is unusual but not unique) and that it hotplugs (which is rather common, thing of USB WIFI sticks). Jan -- Siemens AG, T RDA IOT Corporate Competence Center Embedded Linux -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to jailhouse-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/919da75f-be40-9b65-b260-2373403275a6%40siemens.com.
