Issues With bridge error.

[nszerver]

Hi, please help not working bridge:

Issues: can't add gre21 to bridge viifbr0: Invalid argument​

Added bridge and not working.

Script:

remote=13.40.130.7
dev=gre21
network=10.150.10.2/24

ip tunnel add ${dev} mode gre remote ${remote} ttl 255
ip addr add 10.150.10.2 peer 10.150.10.1 dev ${dev}
ip link set ${dev} up
ip route add ${network} dev ${dev}


brctl addbr viifbr0
brctl addif viifbr0 gre21
ip link set viifbr0 up

ip rule add from 11.14.189.44/30 table 666
ip rule add from 13.40.130.32/28  table 666
ip route add default dev gre21 table 666
ip route add 11.14.189.44/30 dev gre21 table 666
ip route add 13.40.130.32/28 dev gre21 table 666
ip a a 11.214.189.45 dev br0