following error comes on CSS which we are using for load balancing of media files please explain these errors.

"

JUN 6 22:59:11 1/1 11895965 IPV4-4: Ipv4MasterForwIphdrChk: Dest = 224.0.0.18,

Src = 172.17.50.38, DosAttack ILLEGAL SOURCE

JUN 6 22:59:11 1/1 11895966 VRRP-4: VrrpMain: bad IP header received,

Bman free'd

JUN 6 22:59:12 1/1 11895967 IPV4-4: Ipv4MasterForwIphdrChk: Dest = 224.0.0.18,

Src = ipaddresss, DosAttack ILLEGAL SOURCE

JUN 6 22:59:12 1/1 11895968 VRRP-4: VrrpMain: bad IP header received"