sub/sub/sub/sub/sub...........

whats this

[benevolent001]

i have seen strange log enteries in my website

i have one subdomain and i have seen enteries like
let's subdomain folder name is sub

entry is like

sub/sub/sub/sub/sub/sub..........upto so on and is giving 301 error whats this and why this happens?

i have just one subdomain folder and no folder of same name inside it..what is this?

[encyclo]

Looks like an infinite loop within a redirect. Are you rewriting or redirecting URLs with mod_rewrite in a .htaccess?

[benevolent001]

i was redirecting the

subsomain.domain.com to

www.subdomain.domain.com

does this caused this?

as i added these two days back and after that i got this error?