pmos/main/postmarketos-config-nftables/rules/50_upnp_client.nft

#!/usr/sbin/nft -f

table inet filter {
	chain input {
		iifname "wwan*" udp sport 1900 drop comment "drop SSDP/UPnP replies from wwan"
		udp sport 1900 accept comment "accept SSDP/UPnP replies"
	}
}