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netpfil tests: skip checksum verification in pft_ping.py
From scapy 2.6.0 it now removes (sets to None) the IP checksum in its defrag code. We typically ask for IPv4 or IPv6 defragmentation, which causes check function failures. Just skip the checksum verificiation here, because we're going to notice incorrect checksums even if the tests don't directly verify it. MFC after: 1 week Sponsored by: Rubicon Communications, LLC ("Netgate")
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@ -205,12 +205,6 @@ def check_ipv4(expect_params, packet):
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if dst_address and ip.dst != dst_address:
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LOGGER.debug(f'Wrong IPv4 destination {ip.dst}, expected {dst_address}')
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return False
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chksum = ip.chksum
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ip.chksum = None
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new_chksum = sp.IP(sp.raw(ip)).chksum
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if chksum != new_chksum:
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LOGGER.debug(f'Wrong IPv4 checksum {chksum}, expected {new_chksum}')
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return False
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if flags and ip.flags != flags:
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LOGGER.debug(f'Wrong IP flags value {ip.flags}, expected {flags}')
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return False
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