[SOLVED] [5.2.1]Two default route after /etc/network/interfaces manual creation

[flotho]

Hi,

I've just installed a fresh proxmox 5.2.1 on SoYouStart Datacenter. I'm really surprised to have no interface file available.
It's really stranged because i've already installed 4.x and 5.1.x successfully.
Any advice ?

regards

 

[flotho]

Well,
We didin't really know why this happened, but we recreate the interface file with correct parameters and almost everything is working.

We still have an issue in routing, we have 2 default routes and we didin't succeed in identifying where the first route associated to the physical NIC is defined.

Any comments on this latest part would be appreciated.
regards

 

[flotho]

Here is the interface file :

# network interface settings; autogenerated

auto lo
iface lo inet loopback

auto vmbr1
iface vmbr1 inet manual
        bridge_ports dummy0
        bridge_stp off
        bridge_fd 0

auto vmbr0
iface vmbr0 inet static
        address A.B.C.D
        netmask 255.255.255.0
        gateway  A.B.C.D2
        bridge_ports enp3s0
        bridge_stp off
        bridge_fd 0

iface vmbr0 inet6 static
        address  ipv6:public:adress
        netmask  64
        post-up /sbin/ip -f inet6 route add                     ipv6:gw dev vmbr0
        post-up /sbin/ip -f inet6 route add default via         ipv6:gw
        pre-down /sbin/ip -f inet6 route del default via        ipv6:gw
        pre-down /sbin/ip -f inet6 route del                    ipv6:gw dev vmbr0

auto vmbr02
iface vmbr02 inet static
        address  10.0.172.254
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0
#WAN for internal routing and NAT : 10.0.172.254/24

    post-up echo 1 > /proc/sys/net/ipv4/ip_forward
    post-up route add -net PUB.IP.SL.OT/28 gw 10.0.172.253
    post-up iptables -t nat -A POSTROUTING -s '10.0.172.253/32' -o vmbr0 -j MASQUERADE
    post-down iptables -t nat -D POSTROUTING -s '10.0.172.253/32' -o vmbr0 -j MASQUERADE
    

auto vmbr03
iface vmbr03 inet static
        bridge_ports none
        bridge_stp off
        bridge_fd 0
#DMZ : 10.0.173.254/24

auto vmbr04
iface vmbr04 inet static
        address  10.0.174.254
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0
#10.0.174.0/24 : 10.0.174.254/24

 

[flotho]

Obviously, default network conf in recent SoYouStart install for PXMX>5.2 is configured thanks to :
https://www.freedesktop.org/software/systemd/man/systemd.network.html
The default conf is found under /etc/systemd/network/[50-default.network]
Commenting the routing part allow my interfaces conf to be fully interpreted.

Thanks for all the comments on the ##proxmox channel !