:POSTROUTING *nat -j SNAT --to-source dead::beef;=;OK -j SNAT --to-source dead::beef-dead::fee7;=;OK -p tcp -j SNAT --to-source [dead::beef]:1025-65535;=;OK -p tcp -j SNAT --to-source [dead::beef-dead::fee7]:1025-65535;=;OK -p tcp -j SNAT --to-source [dead::beef-dead::fee7]:1025-65536;;FAIL -j SNAT;;FAIL