arp spoofing

(I've read other threads in the forum, but they didn't help me figure out this.) Since a few days my server has regularly logged many messages like the following ones every 20 minutes: Nov 1 16:24:58 myserver kernel: arp: xx.xx.xx.100 moved from 02:0e:b6:59:43:0a to yy:yy:yy:yy:yy:yy on...

hi there, Im trying to get upsidedownternet working with arpspoofing, something along the lines of this: https://help.ubuntu.com/community/Upside-Down-TernetHowTo (but using arp spoofing instead of changing the targets gateway manually) anyway, ive got it semi-working, as some/most images that...