MD5 check failure while 206 partial content download

[JHsorth]

ATS Version: 4.2.3
Description:
(1) Single thread complete download the specify url , the MD5 is correct
(2) 206 partial content download the specify url, the range content MD5 is error

curl -x127.0.0.1:80 -so /tmp/part1 --range 488205666-732308498 http://a.foo.com/bigfile

Debug Log:

why the cache_seek is a negative number ?
Has anyone encountered a similar situation or explained it ?
Thanks a lot .

[scw00]

Sorry, we didn't support 4.2.x anymore.

Please feel free to reopen it if this case is in our supported version.