这两天经常 ssh 不上 aws，看了下是运营商的问题吗

[hanyceZ]

Australia, Sydney	Vultr	Connection to 18.139.3.40:22 successful
Taiwan, Taichung	Google	Connection to 18.139.3.40:22 successful
China, Chengdu	Tencent	Connection to 18.139.3.40:22 successful
China, Shenzhen	Aliyun	Connection to 18.139.3.40:22 successful
China, Beijing	Aliyun	Connection to 18.139.3.40:22 successful
China, Beijing	Tencent	Connection to 18.139.3.40:22 successful
China, Anhui	China Mobile	Connection to 18.139.3.40:22 successful
China, Jiangsu	China Mobile	Connection to 18.139.3.40:22 successful
China, Jiangsu	China Unicom	pinger offline
China, Hangzhou	Aliyun	Connection to 18.139.3.40:22 successful
China, Qingdao	Aliyun	Connection to 18.139.3.40:22 successful
China, Shanghai	Tencent	Connection to 18.139.3.40:22 successful
China, Shanghai	Aliyun	Connection to 18.139.3.40:22 successful
China, Shanghai	China Telecom	Connection to 18.139.3.40:22 successful

只有联通是 pinger offline 的吗，其他否没问题，连自己手机热点（电信的），也可以 ssh 进去。有别的办法吗