请问一下tcpdumpvv后有好多国外IP

tcpdump -vv
这个命令后：
14:58:14.568332 IP (tos 0x0, ttl 64, id 65523, offset 0, flags [DF], proto UDP (17), length 73)
    iZ329ljpa3gZ.49517 > 10.202.72.116.domain: [bad udp cksum 8908!] 59574+ PTR? 150.138.168.10.in-addr.arpa. (45)
14:58:14.569975 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 10.168.138.150 tell 10.168.143.83, length 42
14:58:14.570219 IP (tos 0xc0, ttl 58, id 47164, offset 0, flags [none], proto UDP (17), length 123)
    10.202.72.116.domain > iZ329ljpa3gZ.49517: [udp sum ok] 59574 NXDomain* q: PTR? 150.138.168.10.in-addr.arpa. 0/1/0 ns: 10.IN-ADDR.ARPA. SOA 10.IN-ADDR.ARPA. . 0 28800 7200 604800 86400 (95)
14:58:14.570476 IP (tos 0x0, ttl 64, id 65525, offset 0, flags [DF], proto UDP (17), length 72)
    iZ329ljpa3gZ.36626 > 10.202.72.118.domain: [bad udp cksum 8b39!] 51551+ PTR? 83.143.168.10.in-addr.arpa. (44)
14:58:14.572439 IP (tos 0xc0, ttl 58, id 24514, offset 0, flags [none], proto UDP (17), length 122)
    10.202.72.118.domain > iZ329ljpa3gZ.36626: [udp sum ok] 51551 NXDomain* q: PTR? 83.143.168.10.in-addr.arpa. 0/1/0 ns: 10.IN-ADDR.ARPA. SOA 10.IN-ADDR.ARPA. . 0 28800 7200 604800 86400 (94)
14:58:14.573416 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 10.168.143.84 tell 10.168.138.150, length 42
14:58:14.573567 IP (tos 0x0, ttl 64, id 65528, offset 0, flags [DF], proto UDP (17), length 72)
    iZ329ljpa3gZ.56484 > 10.202.72.118.domain: [bad udp cksum 2e10!] 42026+ PTR? 84.143.168.10.in-addr.arpa. (44)
14:58:14.575711 IP (tos 0xc0, ttl 58, id 24515, offset 0, flags [none], proto UDP (17), length 122)
    10.202.72.118.domain > iZ329ljpa3gZ.56484: [udp sum ok] 42026 NXDomain* q: PTR? 84.143.168.10.in-addr.arpa. 0/1/0 ns: 10.IN-ADDR.ARPA. SOA 10.IN-ADDR.ARPA. . 0 28800 7200 604800 86400 (94)
14:58:14.641206 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 10.162.87.238 tell 10.168.136.108, length 42
14:58:14.641552 IP (tos 0x0, ttl 64, id 60, offset 0, flags [DF], proto UDP (17), length 72)
    iZ329ljpa3gZ.51262 > 10.202.72.116.domain: [bad udp cksum 686!] 29577+ PTR? 238.87.162.10.in-addr.arpa. (44)
14:58:14.643654 IP (tos 0xc0, ttl 58, id 8727, offset 0, flags [none], proto UDP (17), length 122)
    10.202.72.116.domain > iZ329ljpa3gZ.51262: [udp sum ok] 29577 NXDomain* q: PTR? 238.87.162.10.in-addr.arpa. 0/1/0 ns: 10.IN-ADDR.ARPA. SOA 10.IN-ADDR.ARPA. . 0 28800 7200 604800 86400 (94)
14:58:14.644051 IP (tos 0x0, ttl 64, id 63, offset 0, flags [DF], proto UDP (17), length 73)
    iZ329ljpa3gZ.37458 > 10.202.72.116.domain: [bad udp cksum 33e7!] 15905+ PTR? 108.136.168.10.in-addr.arpa. (45)
14:58:14.646065 IP (tos 0xc0, ttl 58, id 47165, offset 0, flags [none], proto UDP (17), length 123)
    10.202.72.116.domain > iZ329ljpa3gZ.37458: [udp sum ok] 15905 NXDomain* q: PTR? 108.136.168.10.in-addr.arpa. 0/1/0 ns: 10.IN-ADDR.ARPA. SOA 10.IN-ADDR.ARPA. . 0 28800 7200 604800 86400 (95)150.138.168.10，83.143.168.10，238.87.162.10这些是不是IP呀？
怎么几乎每秒都有这一些
还有探针下居然：
服务器已运行时间0天18小时22分钟