require-mppe-128 and ipad2

Hello I am running a redhat vpn with mppe-128. It works well with ipod
touch, ipad and windos xp and windows 7 clients. We got a new ipad 2
last week and I get

Apr 6 05:31:53 apphire pptpd[13565]: GRE: Bad checksum from pppd.
Apr 6 05:31:56 apphire pptpd[13565]: CTRL: EOF or bad error reading
ctrl packet length.
Apr 6 05:31:56 apphire pptpd[13565]: CTRL: couldn't read packet
header (exit)
Apr 6 05:31:56 apphire pptpd[13565]: CTRL: CTRL read failed
Apr 6 05:31:56 apphire pppd[13566]: Modem hangup

Looks like an ipad2 bug? any suggestions

Ok looks like adding noaccomp to options.pptp fixes the problem