[PVE-User] Additional ip added to my interfaces file persist on network with a new dev

[Wendell Hatcher <wendellhatcher1074@gmail.com>]

Hello, I am trying to add my second ip to my network and have updated my 
network interfaces file but additional ip per the
 > > documentation isn't being seen on dev eno1:1
 > >
 > > 
https://docs.hetzner.com/robot/dedicated-server/ip/additional-ip-adresses/

ip address add 5.9.122.67 dev eno1:1
ip route add 5.9.122.67 dev eno1:1
# route -n
 > > Kernel IP routing table
 > > Destination Gateway Genmask Flags Metric Ref Use Iface
 > > 0.0.0.0 5.9.122.97 0.0.0.0 UG 0 0 0 eno1
 > > 5.9.122.67 0.0.0.0 255.255.255.255 UH 0 0 0 eno1
 > > 5.9.122.96 5.9.122.97 255.255.255.224 UG 0 0 0 eno1
 > > 5.9.122.96 0.0.0.0 255.255.255.224 U 0 0 0 eno1
 > > 10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr0
 > > 172.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr1

I can see the route added and then I can ping it internally but when i 
do a network restart or reboot the server on the service the ip 
disappears and is nolong able to ping. I have the ip in my static 
interface file but it wont persist. What am I doing wrong?


interface file:


source /etc/network/interfaces.d/*
auto lo
iface lo inet loopback
iface lo inet6 loopback
auto eno1
iface eno1 inet static
address 5.9.122.105/27
gateway 5.9.122.97
up route add -net 5.9.122.96 netmask 255.255.255.224 gw 5.9.122.97 dev eno1
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up echo 1 > /proc/sys/net/ipv4/conf/eno1/proxy_arp
iface eno1 inet6 static
address 2a01:4f8:162:726c::2/64
gateway fe80::1

auto eno1:1
iface eno1:1 inet static
allow-hotplug eno1:1
address 5.9.122.67/32
gateway 5.9.122.65
up route add -net 5.9.122.64 netmask 255.255.255.224 gw 5.9.122.65 dev 
eno1:1



auto vmbr0
iface vmbr0 inet static
address 10.10.10.1/24
bridge-ports none
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094
hwaddress 00:50:56:00:88:1E # MAC address of the NIC, required since 
Proxmox 7.0
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '10.10.10.0/24' -o eno1 -j 
MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '10.10.10.0/24' -o eno1 -j 
MASQUERADE
post-up iptables -t nat -A PREROUTING -i eno1 -p tcp --dport 8080 -j 
DNAT --to 10.10.10.4:8080
post-down iptables -t nat -D PREROUTING -i eno1 -p tcp --dport 8080 -j 
DNAT --to 10.10.10.4:8080
post-up iptables -t nat -A PREROUTING -i eno1 -p tcp --dport 8080 -j 
DNAT --to 10.10.10.5:8080
post-down iptables -t nat -D PREROUTING -i eno1 -p tcp --dport 8080 -j 
DNAT --to 10.10.10.5:8080
post-up iptables -t nat -A PREROUTING -i eno1 -p tcp --dport 8443 -j 
DNAT --to 10.10.10.9:8443
post-down iptables -t nat -D PREROUTING -i eno1 -p tcp --dport 8443 -j 
DNAT --to 10.10.10.9:8443
auto vmbr1
iface vmbr1 inet static
address 172.10.10.1/24
bridge-ports none
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '172.10.10.0/24' -o eno1 -j 
MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '172.10.10.0/24' -o eno1 -j 
MASQUERADE

post-up iptables -t raw -I PREROUTING -i fwbr+ -j CT --zone 1
post-down iptables -t raw -D PREROUTING -i fwbr+ -j CT --zone 1