Could not visit bgo from my specific IP range.

[Yifan Jiang <yfjiang suse com>]

Dear Gnome hackers,

Recently when I tried to visit bugzilla.gnome.org from a IP range, it is
always blocked :-(

Chrome shows:

  https://bugzilla.gnome.org/ is unreachable.
  ERR_ADDRESS_UNREACHABLE

ping shows:

  PING bugzilla.gnome.org (209.132.180.186) 56(84) bytes of data.
  From bugzilla-attachments.gnome.org (209.132.180.186) icmp_seq=1 Packet filtered

> From wireshark, it looks ICMP packet was failed to reach 209.132.180.186 via a
Code 13 feedback (Communication Administratively filtered).

Specifically, from late last week, the issue has been always happening when I
visit bgo from a public IP (45.122.156.254). Otherwise, from IP ranges other
than that, I could visit bgo smoothly.

Would you possibly have a kindly check? Thank you!

Best regards,
Yifan