[squid-users] Forwarding loop?

We're using a

intranet -> squid -> Dansguardian -> squid -> Internet
setup to filter the traffic for viruses

This must be the cause for this warning:

Aug 27 23:18:46 proxy-cvk-2 squid[27921]: WARNING: Forwarding loop detected for: Client: 127.0.0.1 http_port: 127.0.0.1:8888 GET http://127.0.0.1/squid-internal-periodic/store_digest HTTP/1.0^M Accept: application/cache-digest^M Accept: text/html^M Host: 127.0.0.1:3129^M Via: 0.0 wlan-proxy.charite.de:3128 (squid/2.6.STABLE3), 1.0 proxy-cvk-2-nocache.charite.de:8888 (squid/2.6.STABLE3)^M X-Forwarded-For: unknown, unknown, 127.0.0.1^M Cache-Control: max-age=259200^M Connection: keep-alive^M X-Forwarded-For: unknown, unknown, 127.0.0.1^M ^M
Aug 27 23:18:46 proxy-cvk-2 squid[27916]: temporary disabling (Not Found) digest from 127.0.0.1

How can I prevent the internal stuff from being forwarded to the
parent_proxy?

-- 
Ralf Hildebrandt (i.A. des IT-Zentrums)         Ralf.Hildebrandt@charite.de
Charite - Universitätsmedizin Berlin            Tel.  +49 (0)30-450 570-155
Gemeinsame Einrichtung von FU- und HU-Berlin    Fax.  +49 (0)30-450 570-962
IT-Zentrum Standort CBF                 send no mail to spamtrap@charite.de