From e88659387107cfeb612b245301fa0c7f1caf613a Mon Sep 17 00:00:00 2001
From: Hanlei Qin <qinhanlei@gmail.com>
Date: Fri, 11 Nov 2022 14:25:42 +0800
Subject: [PATCH] up

---
 proxy.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/proxy.md b/proxy.md
index a6d583e..cffc8ec 100644
--- a/proxy.md
+++ b/proxy.md
@@ -138,4 +138,6 @@ Outline is an open source project created by Jigsaw to provide a safer way for n
 - method aes-256-gcm not supported
   - `pip install https://github.com/shadowsocks/shadowsocks/archive/master.zip -U`
   - `sudo apt-get install -y libsodium*`
-
+- ['Cannot open BPF device' error on c.open()](https://github.com/mscdex/cap/issues/47)
+  - `sudo chmod o+r /dev/bpf*` should help in reading of Berkley Packet Filter.
+  - `sudo chmod o+r+w /dev/bpf*` for udp2raw on macOS