To quote from draft-ietf-uta-tls-bcp-09 (https://tools.ietf.org/html/draft-ietf-uta-tls-bcp-09#page-9)
o Implementations MUST NOT negotiate RC4 cipher suites.
Rationale: The RC4 stream cipher has a variety of cryptographic weaknesses, as documented in [I-D.ietf-tls-prohibiting-rc4]. Note that DTLS specifically forbids the use of RC4 already.
To quote from draft-ietf- uta-tls- bcp-09 (https:/ /tools. ietf.org/ html/draft- ietf-uta- tls-bcp- 09#page- 9)
o Implementations MUST NOT negotiate RC4 cipher suites.
Rationale: The RC4 stream cipher has a variety of cryptographic tls-prohibiting -rc4]. Note
weaknesses, as documented in [I-D.ietf-
that DTLS specifically forbids the use of RC4 already.