Fix: "AddrFormatError: address '...' is not an EUIv48"
Fix: "AddrFormatError: address '...' is not an EUIv48"

Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

Tejas-Subramanya/RYU_MEC,alanquillin/ryu,alanquillin/ryu,lagopus/ryu-lagopus-ext,iwaseyusuke/ryu,takahashiminoru/ryu,habibiefaried/ryu,lagopus/ryu-lagopus-ext,pichuang/ryu,fujita/ryu,hisaharu/ryu,Tejas-Subramanya/RYU_MEC,Tejas-Subramanya/RYU_MEC,iwaseyusuke/ryu,fkakuma/ryu,habibiefaried/ryu,osrg/ryu,gareging/SDN_Framework,hisaharu/ryu,alanquillin/ryu,shinpeimuraoka/ryu,osrg/ryu,lagopus/ryu-lagopus-ext,TakeshiTseng/ryu,fujita/ryu,zangree/ryu,pichuang/ryu,pichuang/ryu,fujita/ryu,alanquillin/ryu,takahashiminoru/ryu,lagopus/ryu-lagopus-ext,iwaseyusuke/ryu,fkakuma/ryu,fkakuma/ryu,fujita/ryu,TakeshiTseng/ryu,Tejas-Subramanya/RYU_MEC,shinpeimuraoka/ryu,osrg/ryu,gareging/SDN_Framework,TakeshiTseng/ryu,TakeshiTseng/ryu,hisaharu/ryu,takahashiminoru/ryu,shinpeimuraoka/ryu,Tejas-Subramanya/RYU_MEC,osrg/ryu,takahashiminoru/ryu,hisaharu/ryu,habibiefaried/ryu,fkakuma/ryu,fujita/ryu,iwaseyusuke/ryu,shinpeimuraoka/ryu,lagopus/ryu-lagopus-ext,TakeshiTseng/ryu,fkakuma/ryu,pichuang/ryu,gareging/SDN_Framework,hisaharu/ryu,iwaseyusuke/ryu,habibiefaried/ryu,alanquillin/ryu,zangree/ryu,gareging/SDN_Framework,habibiefaried/ryu,zangree/ryu,osrg/ryu,takahashiminoru/ryu,shinpeimuraoka/ryu,zangree/ryu,pichuang/ryu,gareging/SDN_Framework,zangree/ryu