Here is the tcpdump -vv
[root@LB-JP-SRV1-1:Active:In Sync] config tcpdump -vv -nni 0.0 host 161.173.59.48
tcpdump: listening on 0.0, link-type EN10MB (Ethernet), capture size 96 bytes
09:35:15.860124 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17891 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:35:16.039529 IP (tos 0x0, ttl 55, id 53558, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.35817 > 10.171.58.6.17891: [udp sum ok] UDP, length 19
09:35:16.039904 IP (tos 0x0, ttl 255, id 6763, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17891 unreachable, length 36
IP (tos 0x0, ttl 55, id 53558, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.35817 > 10.171.58.6.17891: UDP, length 19
09:35:20.860201 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17891 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:35:21.028248 IP (tos 0x0, ttl 55, id 53559, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.41953 > 10.171.58.6.17891: [udp sum ok] UDP, length 19
09:35:21.029110 IP (tos 0x0, ttl 255, id 23118, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17891 unreachable, length 36
IP (tos 0x0, ttl 55, id 53559, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.41953 > 10.171.58.6.17891: UDP, length 19
09:35:25.860243 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17891 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:35:26.028611 IP (tos 0x0, ttl 55, id 53560, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.51623 > 10.171.58.6.17891: [udp sum ok] UDP, length 19
09:35:26.029099 IP (tos 0x0, ttl 255, id 63946, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17891 unreachable, length 36
IP (tos 0x0, ttl 55, id 53560, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.51623 > 10.171.58.6.17891: UDP, length 19
09:35:30.860316 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17891 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:35:31.029024 IP (tos 0x0, ttl 55, id 53561, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.44508 > 10.171.58.6.17891: [udp sum ok] UDP, length 19
09:35:31.030415 IP (tos 0x0, ttl 255, id 56690, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17891 unreachable, length 36
IP (tos 0x0, ttl 55, id 53561, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.44508 > 10.171.58.6.17891: UDP, length 19
09:35:35.860369 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17891 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:35:36.028675 IP (tos 0x0, ttl 55, id 53562, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.35585 > 10.171.58.6.17891: [udp sum ok] UDP, length 19
09:35:36.029332 IP (tos 0x0, ttl 255, id 64237, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17891 unreachable, length 36
IP (tos 0x0, ttl 55, id 53562, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.35585 > 10.171.58.6.17891: UDP, length 19
Here is the tcpdump after the route added,
09:50:43.681132 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17552 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:50:43.890132 IP (tos 0x0, ttl 55, id 53563, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.47085 > 10.171.58.6.17552: [udp sum ok] UDP, length 19
09:50:43.891040 IP (tos 0x0, ttl 255, id 28279, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17552 unreachable, length 36
IP (tos 0x0, ttl 55, id 53563, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.47085 > 10.171.58.6.17552: UDP, length 19
09:50:48.681209 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17552 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:50:48.851267 IP (tos 0x0, ttl 55, id 53564, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.49750 > 10.171.58.6.17552: [udp sum ok] UDP, length 19
09:50:48.852292 IP (tos 0x0, ttl 255, id 59943, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17552 unreachable, length 36
IP (tos 0x0, ttl 55, id 53564, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.49750 > 10.171.58.6.17552: UDP, length 19
09:50:53.681291 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17552 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:50:53.849545 IP (tos 0x0, ttl 55, id 53565, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.49688 > 10.171.58.6.17552: [udp sum ok] UDP, length 19
09:50:53.850043 IP (tos 0x0, ttl 255, id 20784, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17552 unreachable, length 36
IP (tos 0x0, ttl 55, id 53565, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.49688 > 10.171.58.6.17552: UDP, length 19
09:50:58.681309 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17552 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:50:58.849741 IP (tos 0x0, ttl 55, id 53566, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.38342 > 10.171.58.6.17552: [udp sum ok] UDP, length 19
09:50:58.850212 IP (tos 0x0, ttl 255, id 59996, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17552 unreachable, length 36
IP (tos 0x0, ttl 55, id 53566, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.38342 > 10.171.58.6.17552: UDP, length 19
09:51:03.681392 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 56) 10.171.58.6.17552 > 161.173.59.48.69: [udp sum ok] 28 WRQ "agent-160249.tmp" netascii
09:51:03.849714 IP (tos 0x0, ttl 55, id 53567, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.36877 > 10.171.58.6.17552: [udp sum ok] UDP, length 19
09:51:03.850384 IP (tos 0x0, ttl 255, id 20822, offset 0, flags [DF], proto: ICMP (1), length: 56) 10.171.58.6 > 161.173.59.48: ICMP 10.171.58.6 udp port 17552 unreachable, length 36
IP (tos 0x0, ttl 55, id 53567, offset 0, flags [none], proto: UDP (17), length: 47) 161.173.59.48.36877 > 10.171.58.6.17552: UDP, length 19
As far as port lockdown, I have it set to Allow All on both the floater and the self-IP.
I am still working on the netcat, but I wanted to the post the other information.