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In real world production websites, the IP_DF flag is not always set for each packet from these websites. the IP_DF flag check breaks Internet connection to these websites for home based firewall like BPFire when XDP synproxy program is attached to firewall Internet facing side interface. see [0] [0] https://github.com/vincentmli/BPFire/issues/59 Signed-off-by: Vincent Li <vincent.mc.li@gmail.com> Link: https://lore.kernel.org/r/20241025031952.1351150-1-vincent.mc.li@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>