Verify the F5 is not rewriting the header when it is loadbalancing

Hi,

you could do a tcpdump on the external and the internal interface, and compare the two, to verify if the headers are the same:

external:

tcpdump -nni 'name of external interface' host 210.xx.yy.89 and port 80 -A

internal:

tcpdump -nni 'name of internal interface' port 80 and host 10:xx.yy.1 or 10:xx.yy.2 -A

Best regards,

Morten