ipProtocols property
IPv4 protocol / IPv6 next header (after extension headers).
Each element can be an 8-bit unsigned decimal number (e.g. "6"), range (e.g. "253-254"), or one of the following protocol names: "tcp", "udp", "icmp", "esp", "ah", "ipip", or "sctp".
Implementation
core.List<core.String>? ipProtocols;