Can i use multiple gateway in one nic card?

Q&A
1

sudo nmcli connection modify “[CONNECTION_NAME]”
ipv4.method “manual”
ipv4.addresses “192.168.0.1,192.168.02”
ipv4.gateway “[GATEWAY_IP_ADDRESS]”

i can use multiple ip addresses in one nic card.

But if this multi gateway,

How can add ip addresses?

2

You can’t set multiple (default) gateways for one connection, thats what routes are for. IP routes determine the way a IP package should take. You can configure them like:

nmcli connection modify <CONNECTION_NAME> +ipv4.routes "<TARGET_NETWORK>/<CIDR_OR_MASK> <GATEWAY>"

The +ipv4.routes adds the route, -ipv4.routes will delete it.

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