Yes, on my router i have specifically set all connections to port 80 be allowed to my server’s ipv6 address.
root@superDietPi:~# ss -tulpn | grep LISTEN
tcp LISTEN 0 50 0.0.0.0:58846 0.0.0.0:* users:(("deluged",pid=21597,fd=17))
tcp LISTEN 0 64 0.0.0.0:44703 0.0.0.0:*
tcp LISTEN 0 128 0.0.0.0:44735 0.0.0.0:* users:(("rpc.mountd",pid=21346,fd=17))
tcp LISTEN 0 5 0.0.0.0:6881 0.0.0.0:* users:(("deluged",pid=21597,fd=13))
tcp LISTEN 0 64 0.0.0.0:2049 0.0.0.0:*
tcp LISTEN 0 100 0.0.0.0:6789 0.0.0.0:* users:(("nzbget",pid=21582,fd=5))
tcp LISTEN 0 128 0.0.0.0:52133 0.0.0.0:* users:(("rpc.mountd",pid=21346,fd=9))
tcp LISTEN 0 80 127.0.0.1:3306 0.0.0.0:* users:(("mysqld",pid=21457,fd=40))
tcp LISTEN 0 128 127.0.0.1:6379 0.0.0.0:* users:(("redis-server",pid=21375,fd=7))
tcp LISTEN 0 128 0.0.0.0:54123 0.0.0.0:* users:(("rpc.mountd",pid=21346,fd=13))
tcp LISTEN 0 50 0.0.0.0:139 0.0.0.0:* users:(("smbd",pid=21325,fd=32))
tcp LISTEN 0 5 0.0.0.0:5901 0.0.0.0:* users:(("Xtigervnc",pid=768,fd=7))
tcp LISTEN 0 128 0.0.0.0:8686 0.0.0.0:* users:(("mono",pid=21671,fd=8))
tcp LISTEN 0 128 0.0.0.0:111 0.0.0.0:* users:(("rpcbind",pid=394,fd=4),("systemd",pid=1,fd=56))
tcp LISTEN 0 128 0.0.0.0:10000 0.0.0.0:* users:(("miniserv.pl",pid=21770,fd=5))
tcp LISTEN 0 50 0.0.0.0:8112 0.0.0.0:* users:(("deluge-web",pid=21685,fd=5))
tcp LISTEN 0 128 0.0.0.0:80 0.0.0.0:* users:(("lighttpd",pid=21555,fd=4))
tcp LISTEN 0 128 0.0.0.0:8084 0.0.0.0:* users:(("mono",pid=478,fd=5))
tcp LISTEN 0 10 0.0.0.0:8085 0.0.0.0:* users:(("python",pid=21781,fd=5))
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("dropbear",pid=739,fd=3))
tcp LISTEN 0 128 0.0.0.0:443 0.0.0.0:* users:(("lighttpd",pid=21555,fd=6))
tcp LISTEN 0 128 0.0.0.0:8989 0.0.0.0:* users:(("mono",pid=21650,fd=10))
tcp LISTEN 0 50 0.0.0.0:445 0.0.0.0:* users:(("smbd",pid=21325,fd=31))
tcp LISTEN 0 128 *:8096 *:* users:(("EmbyServer",pid=21613,fd=231))
tcp LISTEN 0 5 [::]:6881 [::]:* users:(("deluged",pid=21597,fd=12))
tcp LISTEN 0 64 [::]:2049 [::]:*
tcp LISTEN 0 128 [::]:56737 [::]:* users:(("rpc.mountd",pid=21346,fd=19))
tcp LISTEN 0 128 *:7878 *:* users:(("Radarr",pid=21663,fd=206))
tcp LISTEN 0 128 [::]:37255 [::]:* users:(("rpc.mountd",pid=21346,fd=11))
tcp LISTEN 0 128 [::]:58569 [::]:* users:(("rpc.mountd",pid=21346,fd=15))
tcp LISTEN 0 128 [::1]:6379 [::]:* users:(("redis-server",pid=21375,fd=8))
tcp LISTEN 0 50 [::]:139 [::]:* users:(("smbd",pid=21325,fd=30))
tcp LISTEN 0 64 [::]:45005 [::]:*
tcp LISTEN 0 5 [::]:5901 [::]:* users:(("Xtigervnc",pid=768,fd=8))
tcp LISTEN 0 128 [::]:111 [::]:* users:(("rpcbind",pid=394,fd=6),("systemd",pid=1,fd=58))
tcp LISTEN 0 128 [::]:80 [::]:* users:(("lighttpd",pid=21555,fd=5))
tcp LISTEN 0 128 *:21 *:* users:(("proftpd",pid=21303,fd=0))
tcp LISTEN 0 128 [::]:22 [::]:* users:(("dropbear",pid=739,fd=4))
tcp LISTEN 0 128 *:9117 *:* users:(("jackett",pid=9036,fd=190))
tcp LISTEN 0 50 [::]:445 [::]:* users:(("smbd",pid=21325,fd=29))
I take from that:
tcp LISTEN 0 128 [::]:80 [::]:* users:(("lighttpd",pid=21555,fd=5))
Likely means yes, it’s listening?